Old cold solder joints

[Ron Lawrence KC4YOY]

I have a question about old solder joints.
I've heard the no lead free solder will not hold up
over the long term, but is it normal for old solder
joints to get cold as they age?
Working on the Clough-Brengle transmitter I've found
a lot of really cold (loose) solder joints, where the wire
that was soldered has just broken free of the solder.
If the solder joints were this cold when it was built
it could not have worked most of the loose joints are
in the antenna coils and the plate cap leads to the final
tubes. These look like original solder joints, they aren't
any shiner that any of the others in the transmitter.

Does anyone know what I can use to age new solder
joints? I really don't want to have a bunch of shiny
solder joints in this thing.

73, Ron
http://radioheaven.homestead.com/CB87project.html

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